How can the new generation of bio based defoamers achieve green production?

Foam is a common challenge in textile printing and dyeing. Traditional defoamers rely on silicone or mineral oil, which is effective but has environmental risks such as difficult degradation, excessive chemical oxygen demand, etc. Environmentally friendly defoamers have become an important driving force for sustainable development in the industry through renewable raw materials and innovative molecular structures.

Traditional organosilicon defoamers are prone to forming silicone scale on the surface of equipment, which affects the texture of fabrics. Mineral oil defoamers have poor biodegradability, and the cost of wastewater treatment increases by more than 30%. Polyether defoamers have insufficient stability in high-temperature and high-pressure environments. And bio based defoamers are derived from vegetable oils (such as castor oil and palm kernel oil) and generate degradable molecular chains through esterification reactions.

The green production of the new generation of bio based defoamers requires optimization in multiple aspects such as raw material selection, production processes, resource utilization, and waste disposal, combined with technological innovation and full lifecycle assessment to achieve environmentally friendly goals.   

Green raw material refers to the use of non grain biomass (such as agricultural and forestry waste, microalgae, kitchen waste oil) or microbial fermentation products (such as sugar derivatives, lipopeptides) to replace petroleum based raw materials and reduce dependence on fossil resources. By enzyme catalysis or green chemical modification, the defoaming performance of natural molecules can be improved, avoiding the environmental residue problems of traditional silicone oil or mineral oil.

Secondly, the production process is low-carbon, using biocatalysts such as lipase and cellulase to complete the reaction under mild conditions, reducing energy consumption and minimizing energy waste. Furthermore, by-products in production (such as glycerol and organic acids) can be converted into high value-added products (such as bioplastic monomers) to achieve the goal of "zero waste". Using integrated membrane separation technology to treat process wastewater and recover useful components. In the future, through the development of intelligent and digital empowerment technologies, a carbon footprint tracking system for the raw material supply chain will be established to ensure transparency throughout the entire chain.   

Through the multi-dimensional collaborative innovation mentioned above, bio based defoamers can truly achieve a closed loop from "green raw materials" to "green applications", promoting the sustainable development of the chemical industry.